Work

Thermally induced local imbalance in repulsive binary Bose mixtures

Year: 2023

Type: article

Abstract: We study repulsive two-component Bose mixtures with equal populations and confined in a finite-size box through path-integral Monte Carlo simulations.For different values of the s-wave scattering length of the interspecies potential, we calculate the local population imbalance in a region of fixed volume inside the box at different temperatures.We find two different behaviors: For phase-separated states at T = 0, thermal effects induce a diffusion process which reduces the local imbalance, whereas for miscible states at T = 0, a maximum in the local population imbalance appears at a certain temperature, below the critical one.We show that this intriguing behavior is strongly related to the bunching effect associated with the Bose-Einstein statistics of the particles in the mixture and to an unexpected behavior of the cross pair distribution function.

Source: Physical Review Research

DOI: 10.1103/physrevresearch.5.l032041

Authors: G. Pascual, G. Spada, S. Pilati, S. Giorgini, J. Boronat

Institutions: Universitat Politècnica de Catalunya, University of Trento, Università di Camerino, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625